Starship Asterisk*

"Today, tired light is remembered mainly for historical interest, and almost no scientist accepts tired light as a viable explanation for Hubble's Law." Yes, the article makes this clear and gives the many reasons for this . . . I originally had the Law of Inertia (N's 1st law) but then t...

I often wondered why a photon moving at the speed of light doesn't run out of energy and simply die; or turn off so to speak. So if it travels across the universe and it had no time it would still be just born. No energy needed.??? Yet it is so easy to stop a beam of light. You are not the only one...

That first photo of Enceladus is great. I am trying to picture in my mind how the light could possibly be bouncing from Saturn but can't seem to figure it out. I must have some basic piece of the puzzle wrong but I don't know which. I think that the Saturnshine is just reflecting of its clouds and ...

If you want an even better explanation than in the paper I linked to above, there is a Scientific American article by the same authors that is on line at http://www.darkcosmos.dk/~tamarad/papers/SciAm_BigBang.pdf A few sample quotess Misconceptions about the Big Bang Baffled by the expansion of the ...

Love the dog as an analogy!!!

At least according to Einstein, the speed of light in vacuum is the ultimate speed limit. But does all light travel at the same speed in vacuum? While my question does not really concern light or photons, it does concern the speed of light as the fastest speed. My question is, "Which is faster...

Well, I don't :( Here we show that galaxies with recession velocities faster than the speed of light are observable This is a bummer for me. I guess I will have to read the article. I don't really understand it either. As far as I do get it, these galaxies are in a part of space that is receding fr...

I don't claim to know that BBT is valid and if my lack of understanding of advanced mathematics means I am researching opinions, so be it. At least I will be honest and acknowledge that this is the case. I will freely admit that the complexity involved in making all these red shift observations has ...

Who is Thomas B Andrews? He lists no academic credentials or affiliations. Years ago I studied all that math but it's long forgotten so I cannot argue the pros and cons of this paper - I'm not going to pretend otherwise. When a person runs out of being able to debate the finer points, they have to d...

http://www.sciencedaily.com/releases/2009/11/091102112048.htm Solar Winds Triggered By Magnetic Fields ScienceDaily (Nov. 2, 2009) — Solar wind generated by the sun is probably driven by a process involving powerful magnetic fields, according to a new study led by UCL (University College London) re...

Can we get back to the topic of the thread? http://www.eurekalert.org/pub_releases/2009-11/cu-ppo110209.php Precise picture of early Universe supports 'dark matter' theory . . . Their measurements of the cosmic microwave background - a faintly glowing relic of the hot, dense, young universe - provid...

So what you are saying is, the speed of expansion is more than twice the speed of light? The speed of expansion is given as a velocity per unit distance. The farther away something is, the faster it is moving away. Once you go far enough away (in fact, to the edge of the observable Universe), space...

To say that being constant over 1 billion light years when the observable universe encompasses 6 billion light years seems like a lot of enthusiasm. 1 Sixth of what we can see, Mind blowing. thanks canuck100 Mark Sorry mistake - typo i was in a rush. The universe is not 6 billion LY. That was how f...

The Milky Way is moving at 630 km/s relative to the local Hubble flow, according to Wikipedia which is 1.4 million miles per hour. Perhaps this puts the 2 million miles per hour into a different context. Also, this story as reported on a NASA web site at http://www.nasa.gov/centers/goddard/news/tops...

If you believe Wikipedia, it says that

plane of the Milky Way is inclined by about 60° to the ecliptic (the plane of the Earth's orbit), http://en.wikipedia.org/wiki/Milky_Way

I've read 58 degrees elsewhere but I cannot find a reliable citation at the moment. I'll edit this post if I find one.

You have a good point, Bystander, and to your point, I looked up the actual paper and they actually DID take the position in the sky into consideration in the statistical analysis which amounts to what you are suggesting. http://arxiv.org/PS_cache/arxiv/pdf/0803/0803.3247v4.pdf we herein refer to a ...

Whatever flavour of BBT/LamdaCDM or its alternate wins out, the winner will be decided by converging simulations. The state of the math used in modern physics has become complex that the only way to do any theoretical work or to explain observations is with computer simulations. That's why it's so h...

Laughing at oneself is critical to a sense of humour -- we Canucks have a quieter nationalism and are more inclined to poke fun at our national symbols. American humour is funny too -- love Jon Stewart!! Sputnik and it's wondrous beep beep must be amazing to kids today, 52 years later, who yawn unle...

The last sentence is a joke -- seriously, it's meant to be funny :!: :lol: :lol: The article is tongue-in-cheek and shouldn't be taken completely literally. The title is a give away -- " It's confirmed: Matter is merely vacuum fluctuations " -- no sense anyone else arguing, it's all been c...

http://arxiv.org/abs/0908.4082 Gamma rays from ultracompact primordial dark matter minihalos Authors: Pat Scott (OKC/Stockholm U), Sofia Sivertsson (OKC/KTH) (Submitted on 27 Aug 2009 (v1), last revised 23 Oct 2009 (this version, v2)) Abstract: Ultracompact minihalos have recently been proposed as ...

In order to determine if it is spin or orientation, wouldn't you need to determine (for lack of a better term) local north for each galaxy? I think that this over-complicates the matter. All that the study has determined is that looking at a fairly large selection of galaxies as they are presented ...

These ideas of 95% of matter was destroyed in the early universe and so on get tossed around out of context. There is nothing magical about someone's loose quote about destruction of matter in the early universe and the fact that our present universe is made up of 4.7% baryonic matter. The annihilat...

We did not modify or refine Newtonian theory at all in coming up with GR. In fact, GR is much less empirical, and falls naturally out of a comprehensive model of the structure of the Universe. Given GR, it is possible to see why Newtonian theory provides a close approximation in some cases. But the...

Another article reports the same thing. http://www.physorg.com/news174918239.html Jupiter's Moon Europa Has Enough Oxygen For Life Also http://www.universetoday.com/2009/10/08/europa-capable-of-supporting-life-scientist-says/ Europa Capable of Supporting Life, Scientist Says All of these sites are r...

no gravitational theory modification has yet proven compelling Chris is right about the huge success of general relativity. Newtonian gravity is an excellent approximation for v<<c and other situations. GR didn't overturn Newtonian gravitation -- it refined it and improved upon it. It had to be thi...